Help me please,guys. My wallet sync is messed up,i downloaded bootstrap.dat but I dont know how to setup it to the bitcoin wallet,answer below or add me on skype - downloadas2 , thanks.

Hey guys, Im new in bitcoin mining, I bought usb antminer u1, I am thinking about buying like 5 more or so. For that I need usb port erupter, can someone show me where I can buy that in UK,give me a link or so and which psu I need to buy.Thanks.
By the way, Im thinking to buy antminer s1, is it worth to buy this miner for a newcomer into bitcoin mining?
Thanks guys!