I stopped riding my recumbent bike across four months of winter. The dark riding conditions plus the low head height meant it was very easy to be dazzled by regular cars. Part of my commute is on unlit roads, and that resulted in loss of night sight and dark moments straight after being flashed.
Additionally, being so low to the ground I got a lot dirtier when the roads were wet. Mudguards/fenders helped, but wet road spray is quite contaminated.
So I'd look for a route that is mostly clear of traffic in the winter, while still being well lit.
Reliability Also consider that your trike is not going to go on a bus rack or anything, so in the event of a breakdown you either fix it there or you walk it to the destination. You'll need to carry enough tools and spares to cope with any basic repair, like tubes, master links and puncture boots or a spare folding tyre along with levers and spanners to suit.
Visibility - you need sufficient lights and reflector tape to be seen from any angle. A front and rear light is insufficient; look at DOT tape to help light up your bike from the side. I even have a length of EL wire wrapped around my frame for added noticability and I'd like to run it up my flag pole too.
FLAG POLE Any recumbent that is mostly below the bonnet/hood of cars is risky in traffic. Even a highwheel recumbent is still leaving your head lower than an upright bike, so drivers can skip seeing you. A bright flag at 6 feet / 2 metres above ground is a wise idea.