Your carrier setup looks good. I can't really see the right side though - kinda looks like the rear of the bike is at the very end of the carrier - Mmm. Anyway, I've used a similar carrier for my Yamaha XT 225, which is about 240 lbs (Grom is about 225 lbs). It worked well on a Toyota pickup and a Toyota Highlander, but it was really a bit too heavy for my Toyota RAV4. I took a 350 mile round trip with the RAV4 though I probably shouldn't have. As long as the weight and size is reasonable those carriers are a great solution. I like 'em.
Oh, one thing I always do when strapping down to a carrier or trailer is that I use 4 straps on the handlebars (2 on left side and 2 on right side) and 2 straps on the rear. It takes an extra 5 minutes to put on the extra pair of straps, but it's the best and cheapest insurance you'll ever buy.