I think Losi would be an excellent first race buggy, though I would caution getting the RTR version, it might be more cost effective buying the kit and then installing proper race equipment, not that you need to buy high end stuff, but the RTR electronics will really hold you back. Do you know what other brands are supported with spare parts at the track in your area? If you can list them out, I'd be happy to provide my opinion on which one I would select if I was going to race at your club. I think it's very important to only race a brand that has on-site parts at the track so your race day doesn't prematurely end.
If you decide to go with a kit, let me know and I'd be happy to help select equipment for it once you set your budget.