Lipo question

[Matt 07]

Ok so im converting my hyper 7 to electric and i need some lipo suggestions, i will be running one pack

Ill be running mamba max esc along with the feigao 540 8l so i need either 2c or 3c lipo

my instincts would tell me to go with 3c for more run time and power although i think it would weigh more than the 2c

Do lipo's need discharging, if so can you suggest a good charger/discharger in one

and also what is a balancer and will i need one, if so plese suggest one

My buget will be around £175 - about $300

Im a complete newbie to lipo so thats why the questions will seem noobish

Cheers,
Matt