Personally I want a females first clutch to be as good as possible. It seems that this sets the trend for that female in terms of production in the years to follow.
If you breed a 2 year old female at 1000g and get 4 eggs you probably won't get much over 6 eggs for awhile from that female.
Whereas if you breed a 3 year old female at 2000g and get 8 eggs you'll probably get 8-10 eggs a year from her.
In the long run I think that waiting it out for a female's 3rd winter and 1500 grams is worth it.
My best example of this is an axanthic girl I have. She was 1500g her 2nd winter and I chose not to breed her. She was 2200g her 3rd winter and laid 10 eggs for me (1 egg died shortly after). Ever since she's been a 9 egg snake year after year. This year she's the biggest she's ever been at 3300g and I'm hoping for a nice sized clutch.
I say wait it out and get more "bang for your buck". I think the pros of waiting outweigh the cons.
Hope that helps 
>>So what is most important here? The age, weight, or the follicular development? I have a female that will be in the same situation this year. She is currently right at 900g and will turn two in March. She unfortunately went off of feed her first winter and has been a picky eater ever since. I have yet to palpate her because in my opinion her weight is just too low. I have another girl who is just over 1200g and is the same age, she will be tried after a couple more meals.
>> I guess to me it seems like the presance of healthy, developing folicles is the important thing sort of like sperm plugs in males. Just curious as to what everyone else thinks.
>>-Bryce
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John Dague
JD Constriction
www.jdconstriction.com