Welcome, doesn't sound to me like your actually looking to "play" ?
For starters the kit we use is plastic bb's only, with strict limits on power output & corresponding BB weight.
That's not to say you can't use the kit perfectly for range or ispc use, just don't expect airgun or real steel velocities.
Question is:
DO YOU WANNA PLAY ?
or just target shoot ?
If it's the latter, then you might want to consider airgun forums & contact local gun clubs & ranges to see what your options are.
If it's the former, if the idea of stalking like-minded sneaky mofo's & picking them off before they do the same to you appeals, then your in the right place.
What I will say is sniping isn't for everyone, in Airsoft your mindset & fieldcraft is just as important as your rifle, many people think it's their bag, only to invest in the sniper specific kit only to realise it's not & they're shit lol.
What I would say is get along to a local site that has a good rep & play a game as a rental, I'm not aware of anywhere that rents sniper rifles so you'll prob have to suck it up & use an assault rifle, but stick it on semi & get sneaky, your halfway there.
If you have a great day (you will😏), then rent for 2 more games in not less than two months, your ready to start shopping, & by that time you'll have a better idea what role your in to, personally I'd recommend the dmr initially, it's a good compromise & excellent for getting experience.
Good luck 👍