That would be a reasonable plan, given your goals.
The Winstrol being alkylated, it would be best to limit its use to 6 weeks.
By the way, the cycle will be a little more efficient if you frontload (a method where blood levels are rapidly brought up to what is intended.
If no particular effort is made, then since ordinarily when an injection is taken, there is already compound built up in the body, but this is not the case when starting, one starts out with low levels and it takes quite a bit of time to build up to what is intended.)
A suitable frontloading amount would be to take about 250 mg of the Sustanon (a little short but not much and has the advantage of being exactly one mL) and 200 mg of the Winstrol, as an estimate. That only affects day 1: everything else continues the usual way.
In this manner your first week is as effective as all the rest, rather than being only about half-dosed. Since your dosage is quite modest anyway, being only half-dosed if not frontloading is even more reason to frontload than is usually the case.