If your Cialis is legit, and properly-dosed, 5mg ED is likely more than enough to see positive effects in all the mentioned areas. Some people see benefits with 5mg EOD. Obviously more active means more results, but also the potential for more long-term side-effects. I'd suggest you cycle off from time to time as well - some people have suggested "dependency" and a lessening of "results" are possible with prolonged or continual use.
Purchase an at-home BP monitor. They are inexpensive, and effective when used properly.