No Peter, Paravanes will still come into their own when just motoring, sitting at anchor and according to my mate still perform stirling service when sails are fully deployed.
Just getting the best out of both or a bit out of both is the key.
Should be a whole new learning curve.
Benn
I really think you will find its just not feasible to deploy paravanes at the same time as sails. It looks to me as though you have plenty of sail area to stabilize your motion,...as long as there is a little wind. And realize that in some cases you will 'create' some wind with your forward motion under power. I've written about motorsailers, 'In light airs, running one engine
often is all that is needed to generate an apparent wind that allows the sails
work harder, and the combination can provide much better results than either
motoring or sailing alone,....sailing synergy/harmony, the motor taking over
in the lulls and the rig taking over in the puffs.'
I might make a little suggestion for your 'learning to sail'. You will get much more feel for what is going on by experiencing it on a small sailboat. And I mean a small one....laser, sunfish, beach catamaran. If there is a small boat rental anywhere near you perhaps have a couple of trips at that. With just a little bit of instruction as to wind direction and how to make that small boat go, you will conquer the basics real quick. And you won't be intimidated by the stability question as you can take that small boat to it's limits with only a dunking/swim as a reward/lesson.
(I used to also own a number of sailboat rentals, and we taught hundreds to sail very quickly,...not know everything, but be able to get out and get back)