I can understand about a new job taking up brain power, new faces,new names, new #'s etc. Time will fix that.
Glad to hear your giving some time to the trike.
I kind of blocked up/mocked up, tacked up the frame, neck, fork tubes etc,
I used a 1in. round shaft about 5' long slid thru the neck bearings and clamped with heater hose clamps, so it held the bearings in place, the shaft extended to the floor. If the shaft is not perfectly straight, rotate 180 deg and split the difference.
then I made a holder from 2x4's to hold the front wheel upright and touching the floor on the wheel centerline.
I had to make sure I had clearance between the front wheel and my front sheet metal. So began juggling, neck height, neck angle, wheel distance, rocker length, (axle to fork lower pivots) and adding in2in. of trail.
Considerations for rocker length......(from axle to fork lower pivots). shock travel was about 3.5 in. front wheel travel ended up being about 4.5in. rocker length turned out to be about 6.5in...... a little longer than I like....I think with less rake, say 40deg, rather than 45 deg , the rocker length could have been shorter......I'm thinking that long rockers and big rake make the front wheel lay over more than I like. But that said, trike rides and steers great! Anyhow, food for thought......larry