[Cap'n Hook]

I'd say that's a little overloaded, BUT, if you have good brakes on the blazer AND you have trailer brakes with a brake controller, I'd say you would be on the fence of being OK!

Make sure you don't get too much tongue weight on the Blazer, but don't have the Suburban too far back on the trailer or you WILL get sway! And sway in this short wheelbase Blazer will NOT be fun!