According to the data sheet for the smaller one "RFP30N06LE", it is fully enhanced at 3V G-S... 20A and a 1.5V VDS... It's on page 4, top right curve... AND it is CLEARLY Marked on Page One as a "Logic Level" Mosfet. A 10 A load and a .047 ohm Rdson will dissipate 5 watts at full load so.. a heat sink is in order. A 10 cm piece of 1.5 mm aluminium for each Mosfet bent into a u shape with a flat bottom where you will drill a 3 mm or better hole for the mounting hole... I'm not sure of where you are and I am totally unfamiliar with European hardware. Were it me I'd use a 1/4" 4/40 screw and nut, 3 mm or about .12" is fine and it should stay well below 100 deg C at full load (10A). Your stated requirements are somewhat less. The advice about lower Rdson is valid but unnecessary IMO for you... Unless you find a source of cheaper TO-220 Mosfets somewhere else. there are many sources of inexpensive Mosfets however the shipping time must be accounted for. I order parts frequently, sometimes daily even though I am retired but for projects that are month's ahead of actual use... or too insanely cheap to pass up...
Bob