You airline,if it is a scheduled airline.... should provide you with Minimum flaps retraction Heights for each airport/runway you are flying in and out of.
They are normally linked to a given Engine Out Sid routing.
These are minimums,if you are lucky enough to fly Airbus, the latter provides Max flaps retraction heights.
If you are not provided Max flaps retraction ones,you can use your Toga single engine limit (normally 10 mins),if needed on the day.
Normally MFRA s are rarely higher than 2000 AAL unless specific airports with high terrain on the departure area such as Innsbruck.
So you rarely need the 10 mins.
If you are not provided MFRA nor EOSID then the runway track is used to 1500 AAL or MSA if higher,i(standard AFM),in that case you can either accelerate at 1000 ft AAl (standard boeing training accl),if no terrain in the departure path,or when reaching your initial altitude ,normally higher than the sector MSA.