Welcome! Glad the +4 is giving you plenty of pleasure.
When I decided to move back to Morgans from Caterhams it was between a +4 and a 3.7 Roadster. I loved both. I went for the Roadster as the dealer advice was that I'd soon want more power, and I didn't regret the choice. Now up to 4.4l, and that's proving sufficient for now, and

seems ok at the moment about it.
Have fun!