What would you do?

[lucias]

I have a brushless 8ight buggy I just bought has a 1515 2.5 on it.. and I also have 8ight-t that I was going to put the 1515 in.. my plan was to sell the buggy and its electronics in the 8ight-t but I just bought a 1521 should I keep the buggy how it is and put the 1521 in the 8ight-t or trade for a muggy and put the 1521 in it and put the 1515 in the 8ight-t.. what do you guys think?