While I'd echo others' sentiments regarding the S class scanner modules, I would counsel buying a better multitool (than starting) first. Scanner modules are up to 600 nanites a go which will be pricey enough when starting out, especially if you're trying to get other things too, and you wont get anything back when you eventually do buy a new multitool. Slots are king, so trying to find one with around 20 slots will keep you going for a long while, long enough to be worth the nanite investment. Like
RoadHazard says, find some scrap or ancient bones and replace the tool first. Then S class modules and mining laser upgrades.
Also terrain manip over a door may work well, but what also works very effectively (and risk free) is shooting the door while you strafe with your ship. Also the landing module makes taking off free after the fact, and you get a reload slot if you mess up the puzzle in the facility.