I’m confused how to start my Japanese learning, should I write my cards in romaji?

I say use whatever method you feel most comfortable with. If writing down a kanji several times will help better embed your story into your head, then all will be well. Everyone will end up using the SRS’ repitions to remember them anyway, so as long as you get the story down, you’re on your way.

I used a similar method, only I really like being able to write the kanji down prettily(?). So, I wrote them down as many times as it took to get a nice looking character. Did the extra time help with memorizing? I’d like to say so. If a particular kanji took a while to write nicely, I remembered it a lot more easily when it came up in review.

And, of course, when reviewing, practice writing the kanji down at least once, making sure the number of strokes and their order are correct. Since you’re gonna be reviewing everyday, I suggest using your finger and palm instead of pen/paper.

Hope this helped!

You know, it may not be taught that way in schools, but I bet pretty much everyone noticed that… it’s kind of hard not to. >__>;;

Again, you’re familiar with kanji, so those that you know that are in long term memory will be re-inforced along with all the ones you don’t. However, I get the feeling your knowledge of stroke order may be lacking, so that’ll definately be supercharged after Heisig.