Wanting to buy a more expensive personal home. Concerned about

Concerned about not being able to get approved for more rentals afterwards. Do I purchase it anyway and just rent it out in a year or two when I want to buy more rentals? Basically, move from house to house and eventually move back? I only ask before prices are going up in the area and I don't want to be priced out in the future. Who else has had the same issue? Currently the personal home was for half of what the approved mortgage amount was for. The new one would be right at that approval number. I have one other single family, one townhome, one condo townhome.