If you are more interested in bodybuilding, I wouldn't get too caught up in your 1RM. Improving your 10RM, on the other hand, would be different.
I don't like 'objective' goals anymore. What's the point? Do you really want to bench so-and-so much so you can tell people you are an intermediate according to a certain authority? On barbell lifts, I always aim for 25lbs more than I can lift right now. That's a number you can generally reach within a certain time frame.
For dumbbell stuff, don't even bother with low reps. Depending on where you stand right now, I would say that dumbbell benching more than your bodyweight for double digit reps is a pretty cool feat and I don't see tons of people doing it.
As for measurements, I'll just quote Brad Pilon:
"1. Neck Measurement
2. Shoulders at their widest point (halfway between your nipples and your clavicle)
3. Chest (measuring tape right across your nipples and under your arms)
4. Waist 3 inches above your bellybutton*
5. Waist at your belly button
6. Waist 3 inches below your belly button*
7. Hips at their widest point
8. Thigh 9 inches above the top of your kneecap*
9. Thigh 6 inches above the top of your kneecap*
10. Thigh 3 inches above the top of your kneecap*
11. Calf at its widest point
12. Bicep (flexed) measure the widest point
13. Forearm at its widest point.
*Depending on your height, you may want to use 2 inch jumps instead. As a rough guess
IÃ¢??d say that anyone under 5Ã¢??6Ã¢?? should use 2 inch instead of 3 inch jumps."