6s set-up ?s

i have been thinking of going to 6s , i am thinking of this for a buggy, looking for a cool setup that i can gear up if needed , please let me know what you think


1512 2y f -1400kv and 6s in a rc8 geared for like 38 mph

should be eff. , but can i use these batterys.........


http://www.rc-monster.com/proddetail...p4843128sp256s

http://www.amainhobbies.com/product_...ducts_id/24726

or should i go with these.....

http://www.amainhobbies.com/product_...ducts_id/32999

or this 5s with a 1512 3.5d or 3d (1500/1700kv)

http://www.amainhobbies.com/product_...ducts_id/33001



and if the protek batterys are crap just say so , thanks