New Guy Here

Hi all. I have been wanting to get into RVing for a long time and have finally gotten the green light. I have a fairly big family, 3 little kids, a wife, and my mother-in-law. I can't squeeze them all in a truck, so I will be using a big SUV to pull a travel trailer. We have been looking at quad bunkhouse trailers in the 30 foot range. But that will come later. My issue right now is finding the ideal tow vehicle. Since I will have 3 adults and 3 small now but growing kids, I feel my only real options are to get a used 3/4 ton Yukon/Suburban, or an Excursion, although I have slightly considered a Nissan NV 3500, but I need 4x4. This vehicle will be mainly used for towing so I will be able to set it up with that in mind. I going to give myself about a month or so to find the right vehicle, then a few months to get it set up. I'm hoping to get the trailer next winter. I'm very comfortable pulling trailers, but have never towed a travel trailer, so I hope to get some good tips here and elsewhere. If anyone can give me some advice on my tow vehicle, I'm all ears. Thanks.