I'm 60 years old, 5' 1" and interested in purchasing a step-thru ebike. I'd like to spend less than $2,500. and will ride recreationally on paved and gravel trails, with some city commuting. I'd prefer an ebike with a throttle; however, it's not mandatory. I live in Las Vegas, Nevada and we have several bike stores that sale name brand (Giant, Trek) ebikes without a throttle. The only store we have that sales ebikes with a throttle is Pedago. Which ebikes would you recommend? Thanks in advance.