boots
Don't forget your feet. If your feet get wet for days at a time you can run into serious problems of your skin peeling off. Not a fun time. I know you don't have the budget now for boots, but I thought I'd throw out a suggestions.
QUICKLACE™ MUKLUK | WATERPROOF MUKLUK | CHOTA QUICKLACE
I have these boots from a recommendation of a bowman in the Pacific north west here in the states. He does frostbites in them. Told me they were warm and waterproof. After testing them out in the tub, in streams and on a very wet trimaran (buckets of water) I'm a firm believer that you don't need $300 pair of "sailing" boots. I’ve also used waterproof socks and deck shoes for warmer weather (much cheaper option).
jacket
As far as a jackets, you may need something like a spray top. At the very least get something with seals around the wrists. A neck seal isn't all that comfortable but it is VERY effective keeping water out. If you opt out of a neck seal, make sure it has a hi-vis hood and a high collar. Definitely want wrists seals at the least. Make sure it’s light weight, waterproof (not water resistant), and contoured to fit your body. Also make sure it doesn’t get in the way of your PDF or your harness. Look for jackets w/ reflectors or bright colors considering you have the most probability of falling off the boat.
pants, bibs, sallopets
They don’t need to be bright. If you fall in, no one will see your pants anyway. Make sure they’re very adjustable for your build and they don’t ride up over your boots. This is why I like knee high boots. Either buy a pair of pants w/ reinforcements on the knees or invest in a cheap set of knee pads. In rough stuff, you’ll spend more time crawling around and scooting across the deck on your butt. Size them to be able to wear a pair of warmer paints under them.
In whatever you get, I’d suggest taped seams, high collar and hood, and wrists seals as a standard. If they aren’t waterproof, don’t bother. You’re the wettest one on the boat. You’re the wave breaker for the rest of the crew.
After looking at your links, that jacket looks like it has all you need, only issue would be figuring out what size you want. Same with the pants. It would definitely be worth a try to see how they work out, the price is right! Sail fast, and let us know how you did.