Some great advice and opinions for you on this one. I posted this elsewhere on a similar question a few days ago, so for those of you who already have seen it, don't shoot me. I admit it, I'm a reposter.
When it comes to gear, especially a first set for a new diver, it can open up a whole can of worms and directions you can go, and none are honestly perfect. You'll need your own personal gear package, ie. fins, mask, snorkel, gloves and boots, which you mention you have covered. I also like to recommend to my students your own hood as it can often be one of the "yuckiest" pieces of gear to rent. After that, you can rent, buy, borrow with each having a different postive/negative. When borrowing gear, you never know that what you get is going to be the correct fit, work as it's supposed to and has been cared for properly. You are basically trusting a friend with your life support equipment. And as many people will scoff at that lable the dive industry uses, the fact is that scuba equipment is indeed life support equipment. The next time you have any doubt about it, take your regulator out of your mouth in 100ft of water and try taking a couple breaths.
Renting gear can be a good way to try different things out (in theory) but keep in mind that most shops around the world purchase inexpensive, entry level gear for their rentals. And before everybody chimes in, notice I said MOST. I know there are stores out there with nicer gear, but in general the most popular rental gear in the world is along the level of a Sherwood Brut, 2 gauge console (maybe a compass) and a Sherwood Silhouette bcd. This level of gear doesn't often give you a great look at the much more convenient, comfortable and feature laden gear a manufacturer has to offer. It's similar in thought to running down to the local car dealer and picking up the most inexpensive Honda Civic on the lot. It gives very little idea what it'd be like to drive the most expensive Acura on the other side of the lot. Another thing to keep in mind is this example. When I took my original Openwater class, the dive shop I used had rental gear from various manufacturers. There was never any heads or tails to what you'd get each time and at that time you could get a horsecollar bcd, with or without a power inflator, and a hardpack or one of those "new fangled" jacket style bcds. It seemed like for the first year I dove I had to get used to a new style of gear everytime I got in the water.
Lastly, purchasing your own set of gear is a great way to go for several reasons, but has it's own pitfalls as well. The advantage of taking your course in the gear you will be using eliminates my last example. You get comfortable with your equipment and it's functions and by the time the class is over you are all set. Another added bonus, if you live in a region where the impromptu dive after work or weekend mornings is a possibility you eliminate the need to spend the time getting gear or trying to be the first at the shop in the morning to get the "good stuff". Granted you may still need a tank fill or rental, but that's not nearly as big a deal in comparrison. On the negative side is knowing what gear you want and deciding what you need as opposed to what you don't. Over all, most dive shops I've visited over the past 30+ years have been honest and don't try to sell you the farm. The problem lies in that if you visit 10 shops, you'll get 10 different opinions on the gear you "need". Take a little time. Read up on the gear. Ask other customers you meet in the shops. Do some research before you buy just like you would for most any other large purchase.
With a little bit of patience and a little research you can quickly be on your way to enjoying scuba for many years!