so I need a gig worthy bass amp/cabinet/rig, REALLY SOON! i already have an amp head,
peavy mark vi bass head: 400w @ 2 ohms 250 @ 4 ohms, i wanted to get


http://cgi.ebay.com/1x15-BASS-GUITAR-CAB-115-8-Ohms-300-Watts-Speaker-/140481590650?pt=LH_DefaultDomain_0&hash=item20b55a f57a

just for practice and also team it up with a:
http://www.seismicaudiospeakers.com/2x10-Bass-Speaker-Cabinet-p/sa-210.htm

for gigs, i was wondering if that head amp would have enough juice to power both of those effectively but keep its rich tone, and if not which individual should i get so that by itself itll be able to perform at gigs? i was thinking obviously the second one with two speakers, but im a noob. THANKS IN ADVANCE!

if you are going to suggest another cabinet setup, be advised my spending limit is 450$ id prefer it stay under 400.