If you must skip the Jet trainer,F15 is a good choice,very stable flyer,good size,easy to fly & land.
Suggest Single Turbine & keep it simple.
Definately seek the help from someone in your area that flys jets.
Most Jet fliers will be always help if they can & usually have a jet trainer set up that you can buddy up on.
Do not try & go it alone,you will need help on setting up & starting,plus always need a second pair of eyes when flying.
I started with ducted fan & then Turbine with the Super Reaper & Wren MW54,low cost,robust & easy to fly.
Good off grass & Tarmac.
Lots of people have flown my Reaper on buddy lead.
Lots of people ended up with a large grin/smile afterwards.
All the best,
John c