What exactly are you dubious about Rod?
The build quality & general safeness of it? Looks fine to me mate. Far better engineered than a lot of stuff out there.
Whether you'll physically be able to ride it? They take a bit more effort to corner than a bike cos the two rear wheels are trying to push you on in a straight line, but wide bars for more leverage make a big diffference to that. The riding style's completely different to a bike, but certainly not difficult. Most non bikers I know that have taken up triking have less problems than bikers, who try to ride as if they're on two wheels.
Whether you'll like being out there in the weather, rather than tucked up in a comfy car? I started riding bikes as a teenager in the late 70s. All we had were "Marlon Brando" style leather jackets, (with a proper collar & a wide lapel that folded over & zipped up. Modern ones mostly have round necks & zip up much higher), & thick jumpers & jeans. I think I was permanently cold for the first 10 years or so. Nowadays the riding gear's improved immensely. Modern Goretex jackets & trousers are very warm & water proof -& also give far better protection than the old clothing. You can buy heated handlebar grips, even heated gloves, jackets & socks! Add a full face helmet & you'll be as snug as you would be in a car.
Whether you can cut it out in the traffic with so many aggressive car drivers about. Much less of a problem on a trike than a bike, simply because you've got more "road presence". Even on a small trike you take up a lot more room than a two wheeler & car drivers will treat you like a car, rather than trying to squeeze past you & push you into the gutter as I've had a few times on two wheels. You'll also be riding something unusual & in my experience, car drivers will slow down or let you pull out of junctions etc, just to get a look at what you're riding.
Some vehicles I've built have been brilliant right from the start. Others have taken a few weeks to get used to before I've been happy to sling them about & have fun on them. When you get on the road, give the thing a chance. The ride will be bumpy & basic but that's half the fun of them. Like driving a vintage car compared to a modern one, having to put a little more into riding it gives you a whole lot more enjoyment out of it.
And if you're still not happy with anything, because you've built it yourself, there's nothing to stop you taking bits back off & re-designing them to suit. Customising's an evolutionary process -things get constantly changed & adapted & a custom bike, car or trike's never really truly finished.
Stop worrying & give it a go mate.
