I saw the latest threads you made about eco hunting, so i assume you might not be very experienced ( If my assumption is wrong then simply ignore the post and cosider a free bump )
The amps combined give you less than 100 drops which might work out or not, but you might use a lot using them. If that reflects your mining budget i would go unamped to lower the volatility. On FOMA/HELL/AU ... you might not even get a hit with that amount of drops when it goes bad.