Replace Hog/Edge + Tusa console with:
Used Conshelf XIV 1st & 2nd
Used Conshelf XIV 2nd (octo)
w/ BC hose & an old console
= $75 - $125 on ebay.
Parts availability is much easier with the Conshelf, plus it has been in production for a very long time. Deep performance will not be as good as the Hog, but the US Navy rates the Conshelf XIV down to 200+ depth with no issues.
I don't think a 5mm would be thick enough, nor will it last long. It'll be compressed to a 2.5mm suit after one year of diving. I crushed my Henderson Thermoprene 7mm after a year and a half of diving.
The best bargain for the money is the Deep See 2-piece 6.5mm, which you can find for about $229 new.
-1
he specifically said NEW. There are many options we could have put out there, but his request/rules.....