Sailing solo is a blast with a boat the size of yours. Definitely leave the jib on unless it's really blowin'. You'll control the tiller and mainsheet/traveller. Set the jib according to your anticipated point of sail and steer by the tell tales. My boat has similar length and horsepower and it's very fast and fun sailed solo. Don't jump right to the trap until you've got total control from the tramp. I actually found it easier to get the hang of roll tacking sailing solo since my usual crew are my 8 year old or my 11 year old--they hinder as much as help. You know the drill for roll tacking. Doing it solo, I come in from the trap, let out about a foot of mainsheet and cleat; uncleat the jib and turn. I stay back on the back of the new leeward hull until the the bows snap around. While this is happening, I work the jib across, cleat/trim it. As I pick up speed, I trim the main and get back out in the trap as needed. It becomes second nature after a little while.
Couple of suggestions for sailing solo:
1. Make sure you're heavy enough to right the boat (lots of posts on the subject) and have the necessary gear.
2. Let someone know where you're going and when you are going to be back (a flight plan).
3. Carry a warning signal (I carry a $2 whistle)
4. Make sure you can rig the boat yourself. I've got a winch to help me do it safely solo.
5. Oh, and about night sailing--do not do it solo.
Go for it!