How long before the next plane? We can't give you a date, number of flights or number of days/months. This is because everyone is different and we don't know how well you will progress and neither do you. If you destroy your trainer tomorrow you'll need another trainer. If your trainer lasts several months AND your skills can handle it, then you can move on to another plane. Don't be too eager to put that trainer away. Many advanced pilots keep one around for fun flying or as a backup. The radio system you have chosen will serve you well for a great percentage of the planes you want for the next few years.