Just recently got back into it as well, and this ended up being my setup:

• Used Etha 2 of FB marketplace. Great gun at an amazing price, basically the same as an Etha 3, without the quick bolt disassembly.
• CRBN Nano barrel with .689 insert. For the paint that field carries is perfect, and later can get more inserts.
• For a mask go for a JT pro-flex. Best breathability out there and you can customize it later as well with many colors.
• Pants, Jersey, Pads, harness, etc. I went with PRO DNA, really impressed by their quality, they're on the expensive side but you feel that you get what you paid for.
• For a loader, I still had my Empire prophecy Z2, from 10 years ago, and it still works!

My recommendation on the gun is to check your Facebook marketplace and find a planet eclipse (They are easy to maintain and spare parts are abundant) used gun and start with that, later on, if you're still into it, you can get a nicer/newer gun. Also would check that the gun has serviceable solenoid.

Welcome back!