i didnt read your whole post, but i had immediate comments:
first, respect your husband. you will only cause resent in your marriage if you force him to have a second kid, or trick him into getting pregnant or something. that is not good.
however, there is no need to take drastic measures.
get the mirena (its awesome) and just take your time. my husband took 2 1/2 years before he sounded more interested in the idea of another kid, but that doesnt mean we are jumping into it at this point. we think that if an adoption situation presented itself, we would do that. but we just wait.
its very important that you not feel resent for your husbands feelings. its probably not a permanent feeling. its ok! let him deal with the child that you have, and get used to being a fathter - it takes longer than you think! just have patience, pray (if you are religious) that you have patience and that God leads you in the way he wants you to go, and last but not least - mark gungor : laugh your way to a better marriage.
this dvd will TOTALLY CHANGE your marriage in a GOOD way. if you can get a copy, or even if you just watch a few clips on youtube, or listen to mark's radio show, its SO AWESOME.
you will love it.
bless you! and good luck!