If your husband has the summer off and you can get time to yourself that way, there is no reason to put Dane in childcare.
As others have mentioned, Dane is still a baby. Children are never "finished products" and shouldn't be expected to exhibit mature social skills in all situations. In fact, Dane is still within the time frame when he is probably experiencing the peak of his stranger anxiety (the peak wont end until 24 months, and even then, he may continue to have some stranger anxiety for a while). I don't think his shyness is anything you need to be worrying about right now.
Even if you were to worry about his shyness, I see little value in socializing children in abnormal social environments. This is why I don't buy the whole "send your kids to school rather than homeschool so your kids will be socialized" argument. What kind of socializing are they getting when put ina situation where they have hours on end with only kids in their same age group and with so many harmful factors that aren't similar to anything we experience as adults.
My SO works in a Preschool/childcare, and we, like jbcjmom will never, ever have our child there! SO sometimes cries after work out of frustration regarding what the kids have to go through there. SO's preschool is considered one of the best in the state, but it has so many problems, and even without those problems, it isn't natural for young kids to be seperated from their mommies. Some parents need daycare, but if you don't need it, I say don't use it.
The best way for Dane to work through his shyness is to do so within the safety of knowing that his mom is nearby if he needs her, that he can come and get her. He may always be shy (maybe that's just his personality), but over time he will learn to cope in social situations so that he and others can have a good time. Stick nearby, not right at his side but nearby, and give him the opportunities to engage (through playdates or whatever) as he seems willing to take them, and you will see it coming naturally.
More importantly than anything I've said, trust your gut!
I'm pro-adoption reform, but not anti-adoption.