Don't be surprised if the forum doesn't produce too much interest, but there will be people out there who will love what you're doing
When two of us set up a monthly HO club in Worthing we got minimal interest from the forum, just encouragement.
What did was set up a simple website on blogger and an email address and decided on a free opening night a few months down the line. We spent that time getting the details of the night, the website and email on local what's on sites, in the local newspaper and radio. Plus we put round a couple of hundred fliers and posters in hobby shops, cafés etc in the local area.
We got 39 people to the opening night and have averaged 20+ racers for the past two and a bit years. Although we invested in the kit and sacrificed some very robust club cars for the first year, all our racers now have their own cars and the club cars never turn a wheel. Our minimal race fees (£2.50) cover hall hire (£25 a time) and all our ongoing equipment costs. The low fee certainly helps boost the numbers and keeps people coming back.
We even got a small grant for our first year's hall hire from the local council
on the basis we were running a not-for-profit club that would involve dads and sons from the local community.
I've done some Scaley digital and I think it would be a great venture. Good luck