you can only use 10 hours from an outside the system FI.
If the UAS instructors are also JAR FI rated you may use some of the hours currently. After EASA comes in I don't think it will be allowed unless the UAS is flying under a FTO.
To be honest f you trying to get into the UAS to only get free flying towards your PPL you won't have much success getting in.
Also have a look at the airleague and GAPAN they do scholoships.