I think you made a good choice and you will probably enjoy it. I started with a modern vapor 902 kit around the begining of november. I think the only dif is the 902 may have a bit bigger battery. I chose it because it looked more like an anolog and I like the pcc set up. I always have every carto spot filled with a carto of dif flavors so I can switch it up during the day.
Battery life on the 902 wasn't horrible. Maybe about one and ahalf to two hours of heavy vaping. At work I would maybe swap bats at lunch. If you are a heavey user I would suggest getting a third batter to have one charged at all times. And always keep the pcc handy.
I hope you enjoy your sidesho.
Oh yea it will work with 510 attys and cartos. But mine wouldn't run low resistence at all the led would just flash, even with a fresh bat.