Solo trapezing, out on the wire powering forward with an empty boat at your feet, there aren't many things better than that.
However soloing is all about priorities:
The first question is can I do it safely?
Are the conditions such that you feel confident that you can stay in control (aside from the first timers' anxiety)?
Can I right the boat myself when she keels over, do I need a righting bag or a pole to get the mast pointing up again?
Am I the only one on the water or are there other boats around that can assist me when I can't help myself?
Do I have my boat set-up the correct way to singlehand it safely?
Do I need the Jib? If you don't, leave it ashore and set up your rig accordingly.
Combining the mainsheet and maintravelersheet simplifies things nicely, you only need take out one line with you.
Keep it simple, figure out what courses you're going to sail and how you're going to trim the rig on those courses.
Tell yourself what how many tacks you'going to do, do them, get back to shore, evaluate yourself (Look at your happy grin in the mirror). If you feel up to it, go out again but don't overdo it, when you start to feel tired, you are tired and should pack it in for the day.
Make sure you work out routines for all manoeuvers and drill them, so you can execute them in a quick but unhurried fashion.
For example, I like to carry the jib on my P-19. During a tack I don't touch it until I'm over on the other bow, then I ease the main, make sure it's not cleated, set the jib for the new course I'm going to sail, cleat the jibsheet, correct my course and trim the main, when I'm convinced that the platform is stable I hook in, sheet in the main to increase pressure to the point that the presence of my weight is required on the wire, cleat the mainsheet, put the mainsheet and joystick in the same hand, grab the trapezehandle with my free hand, push myself out, stabilise myself, pass the mainsheet over to my free hand, make final adjustments and fly away!
There was this time that the mainsheet wasn't uncleated while I was faffing about with the jib during a tack, the resulting bath made sure I won't forget to check that again!

Just remember to have fun, find your comfortzone and gradually push that comfortzone to a higher level, don't try to do it all at once. And if you have received outside assistance to recover from a spill, buy those guys a beer.