Hello. My back and knees are screaming for a lighter combo. The Gallien-Krueger MB112 looks interesting at 28 pounds (and 200w). Is it any good? Disclaimer: amp will be used with a Fender Jazz (with rounds), Rickenbacker 4003 (flats) and Hofner 500/1v62 (flats). I'll use in small to medium gigs (up to 300 persons). Thanks!