My Lakland 55-94 Deluxe is lighter than most 4 string basses I've owned. The body is swamp ash which is fairly light but has nice tonal attributes.
The mark bass combo II is a great amp and very light as is the GK MB115 (1 15") even lighter. The Mark is warmer, the GK - well it is classic GK sound. Carry with one hand - but you might have to forgo the B. As a 4 string player - I came to the conclusion that the 5 string brings with it a lot of weight.
