You should be able to fit both sets of gear in just 1 suitcase IF you pack it RIGHT.
I dive but GF doesn't but she does snorkel so on trips we have 2 sets of: masks, fins, snorkels, + my boots, 2 pairs of gloves (one w/webbing one regular), hood, log book, save a dive kit (a small tackle box filled w/all sorts of goodies), wetsuit, lights, knife, saftey sausage, + an extra spare mask and snorkel and then we still fit some clothes (usually socks, t-shirts & underwear wrapped up around the gear to keep it from being banged around too much) and there is other stuff in there as well.
All of that is in 1 large rolling suitcase. I carry on my Reg bag with my reg, comp, octo, and gagues, + a light jacket and a magizine and/or book for reading on the flight (I don't trust the airlines w/my reg bag so it never leaves my sight).
We travel with 2 checked bags and 2 carry on bags, the limit the airlines let you have (1 checked & 1 carry on each) without paying extra for more luggage.
If you have your OWN gear there is NO reason to rent inferior or beat up gear (for all the reason already said) pull out your suitcases a day or so early and try different ways of arranging your gear so you can get ALL the dive gear plus some clothes in 1 suitcase. It can be done it just takes a little practice and rearranging. Use the clothes to fit into the small areas between your gear or wrap around the delicate stuff (hence why I use the socks, t-shirts, underwear, and towels it dosen't really matter if they get all wrinkled) Try putting the fins lying flat against the sides (not the sides you open but the sides that frame out the bag), top and bottom of the bag and then fill in the center of the bag using clothes to protect and keep gear from shifting.
Just make sure it is a ROLLING suitcase cuz it does get heavy! Also make sure it is NOT a dive bag (ya know the bag has a dive flags on it or has the Name of a dive co. on it) it is just way too easy for someone to see it and realize that it contains expensive dive gear in it and POOF it disappears.
just My $0.02
for what it is worth
I dive but GF doesn't but she does snorkel so on trips we have 2 sets of: masks, fins, snorkels, + my boots, 2 pairs of gloves (one w/webbing one regular), hood, log book, save a dive kit (a small tackle box filled w/all sorts of goodies), wetsuit, lights, knife, saftey sausage, + an extra spare mask and snorkel and then we still fit some clothes (usually socks, t-shirts & underwear wrapped up around the gear to keep it from being banged around too much) and there is other stuff in there as well.
All of that is in 1 large rolling suitcase. I carry on my Reg bag with my reg, comp, octo, and gagues, + a light jacket and a magizine and/or book for reading on the flight (I don't trust the airlines w/my reg bag so it never leaves my sight).
We travel with 2 checked bags and 2 carry on bags, the limit the airlines let you have (1 checked & 1 carry on each) without paying extra for more luggage.
If you have your OWN gear there is NO reason to rent inferior or beat up gear (for all the reason already said) pull out your suitcases a day or so early and try different ways of arranging your gear so you can get ALL the dive gear plus some clothes in 1 suitcase. It can be done it just takes a little practice and rearranging. Use the clothes to fit into the small areas between your gear or wrap around the delicate stuff (hence why I use the socks, t-shirts, underwear, and towels it dosen't really matter if they get all wrinkled) Try putting the fins lying flat against the sides (not the sides you open but the sides that frame out the bag), top and bottom of the bag and then fill in the center of the bag using clothes to protect and keep gear from shifting.
Just make sure it is a ROLLING suitcase cuz it does get heavy! Also make sure it is NOT a dive bag (ya know the bag has a dive flags on it or has the Name of a dive co. on it) it is just way too easy for someone to see it and realize that it contains expensive dive gear in it and POOF it disappears.
just My $0.02
for what it is worth