I think it is better to wait for a few more days.

i've done it sometimes, and, it depends on a lot of factor. You have to follow some rules:
- check volumes in both exchanges, cause sometimes (most of) low or hight rate are given by small purchases, so you have a misleading situation where you will buy a big amount on exchange A, will send to B paying fees and realising that you have let's say 745 AudioCoins (bough at 1,341DOGE) but in buy order ther's just 0.5 audiocoins at 1,999DOGE and the other are less than 1,341 so you are losing money =D
- if you check and the volumes are ok you have to consider the transaction time, some coins need 6 confirmation other 200, so it could take from minutes to days
- before the purchase check the possibility to deposit and withdrawal in both exchange

finally it's possible to make money but most of the time will lose.

The best practice is to buy low on small volume and sell hight on high volume (buy on livecoin sell on bittrex)

I think eth, eos, waves these three altcoin are very valuable , hope they can give me a high income and wait.

Waves has a strong team, but they often to don't  on time