Hi M.,
Congrats on your second baby boy! Here are my thoughts:
1. I think your new baby is too young to CIO (cry it out). He's still getting used to this new world and probably enjoys your warm bodies and breathing to sleep next to. You can always break these habits later. Many pediatricians (including mine) said its fine if they are at least 14 lbs. I just didn't feel great about it at all, so we didn't do it until 13 months, and he never really cried it out, it was our own slow version with dads help.
2. My suggestion about your toddler, is get a toddler/crib mattress and put it next to your mattress or at the bottom of it (if its on the floor). If not, maybe put it flush against one of your walls and put some pillows around it in case he rolls around. Then he's still in your room (maybe he can fall asleep in your bed and you can transfer him to this new bed).
3. If #2 above works, maybe you can start sleep training your toddler into his own room once you move. You can talk about it now and get him ready for it mentally...maybe go to the library and check out a book about getting his own bed/room and make it fun for him to decorate. And if he's still unsure, just start with naps in this new room (I can tell you more about that in a separate email how that worked for us).
4. For now, keep your new baby in bed with you, until its time to move to your new home. And maybe start putting him in his bassinet after he falls asleep just for naps to start. Does he fall asleep on his own? nursing? being rocked? if so, then maybe you can transition him into his bassinet??
5. As for the time with hubby, can your dad take toddler to park while your infant naps? And then you can squeeze in some alone time? Or, while they are both napping...sneek away into the bathroom for some fun? Or maybe just some cuddling on the couch while watching a movie?
6. Another alternative to the swing, a sling. Do you have one or can you get one? The baby can sleep on you while you are doing stuff at the house, or going on a walk. I used to vaccuum sometimes with my baby sleeping on me...he liked that sound. (Check with you pediatrician about the back issue in a swing, I bet its fine because they are so flexible...they were in the fetal position for 10 months so he probably likes it).
7. One thing about his crying...I wouldn't let him cry until he's blue in the face, that sounds like he is really scared. Crying is the only way he can communicate, so by ignoring this signal, you may not be meeting his basic needs.
Keep in mind, these are only opinions and whatever you chose for your family is the right way for you. I always listened to what felt right.
Good luck to you!
A.