My Axiome+ has two Emcotec regulators, one Rx and one for IGN, with the YS 175CDI and three batteries of 900 mAh TP G8, two for the dual Rx reg, one for the IGN reg, a Truturn spinner, all futaba gear and weighs 4930gr with all that no fuel.

It is doable, but probably 30% of the plane will get that lucky.