Welcome aboard Zaklawe-Outlaw. I can't advise regarding the Ironman qualifier. Regarding clubs, that is very important if you are going to enter as a South African runner. It's not important for International Runners. If you want to run as a South African runner there should be a club that can accommodate you.
Possibly. A couple of lower mileage weeks for me. I've done some shorter races but I'm still getting my pace back. 3rd lady at Redcar parkrun at the weekend was more due to the size of the field than me being anywhere near my best pace.
I've decided that next year I'm going to stick to Coach Lindsay's advice and not do as many marathons in the build up, with a greater focus on quality.
I started easy running in the week after Comrades as my legs were fine. I've not got much pace at the moment but that is to be expected, both from having run Comrades and also from the injury-necessitated month of little running that preceded it.
I've got Race to the Stones coming up in mid-July.