Your companionway is too close to the mast to have a conventional ahead-of-the-dodger mid boom traveller.
A slightly more drastic change that may work for you would be to put the traveller just a foot or so back from the companionway, move the sheet attachment back on the boom accordingly, and then build yourself a "bridge deck" in the front of the cockpit under the traveller.
This might give you some clearance for a smallish dodger, the sheet would go just behind it, and you'd have the added advantage of sealing the lower part of the companionway which is a safer condition. The filled in section could be made into a small locker for winch handles, lunch, (a beer cooler!?) whatever.
Also, as long as you remembered to keep the mainsheet tail close to hand, using it from the wheel will not be so bad.
But its a bigger job, you'd have to add some steps or a ladder inside the companionway, and it would entail some careful joinery or glass work to make it all look good in the end.
However the possibility of all this rests on just where the pedestal was put, and how much room you have left.
I'd probably ditch the wheel, get rid of that weight and free up the cockpit some.