I would be very careful with winstrol. For females, anavar to winstrol is a bigger step. Winstrol seems to be looked at as a safer drug, but in my experience, it can cause some problems for gals. I've known a lot of girls that have had voice issues on winstrol. It starts with a sore or scratchy throat, followed by a hoarse voice. Once these things happen, it's too late. Your voice has already dropped. I'm not going to tell you what you should or shouldn't do with your body, but I do want you to be as informed as possible so that you may avoid making some bad choices out of ignorance. It sounds like you handled anavar pretty well, if you did not experience sides at 20mg but I would still be careful with winstrol. If you use winstrol, I would start very low. I would not attempt to run it with anavar at the same time, especially for your first run, as you are learning how it effects you. I would start with 5mg or even 2.5mg and work my way up to 10mg.

I understand that you said you can only run orals for now. Not sure what your situation is, but personally, I would suggest holding off on the winstrol and either stick with var or do whatever you need to do, to get to the place that you can use primo. After anavar, primo is the next best steroid for females. There is a slightly higher chance of virilization with primo than var, but I believe either would be safer than winstrol. I would start out with 50mg, taken 1x wk of injectable primo, then if you seem to be responding well, after a few wks, move to 100mg EW. 

Another good option would be GH. Gh isn't going to have any virilizing effects, plus it improves hair, skin and nails...three things that a lot of girls love ;) 1-2iu ED should be enough, taken long term, 4 plus months. You can add in cycles of anavar to get the most out of it.