So with the current dip happening as we speak TRX is at 3c and Neo is at $67.
Now I have 1.2k remaining

ready to invest for a good return. Should I:
1)Go all in for TRX at 3c and hold till test main net pump and dump it?
2) should I invest it in Neo?
Both are good coins so making a split between this two is not bad at all, i suggest you do a 50/50 if you can't decide since they can easily go up again once bitcoin started to pump.