While you are in Cydia and after you have selected a tweak for downloading, you should get a pop-up with the blue "Confirm" button. Don't press that. Press the first line in that pop-up that says "Continue Queuing."
Just rinse & repeat that step for every tweak you install. Then, when you've hit the install button on the last tweak you want, then hit the blue Confirm button. All the tweaks you were queuing will install and then you'll be prompted to respring or reboot (which one depends on the tweak).
When it's done, all your tweaks should be installed and you only had to respring/reboot once.
Hope this helps.
Marilyn