23 tsunami-sell or repower?

[bobfish21]

currently own a 74 23' tsunami.repowered it with a '99 260 efi mercruiser alpha gen ii.also did extensive work to make the boat in near perfect condition(new coaming pads,dash panel and guages,stripped bottom to gel coat and 7 coats of barrier,reglassed soft spots in deck).love the boat,but im getting a little chicken in my old age about heading offshore with one motor.do i repower with twins and a bracket(new 140 suzuki 4's look good) or sell this and start over? can anyone give me some ideas what the boat's worth(has about 100-125 hrs since repower).hull is all original gel coat and is in excellent shape.
thanks for any input!