Hiya
First of all the only Sunlight Aviation that is listed in companies house has been dissolved and there is there is no sunlight aviation service unless his registered under a different company name and trading under another name.
Now Licencia is owned by a guy called Jeff or something like that diebert i believe his EX KLM, his a broker more than a contractor a broker who gets an aircraft before he got any money from a client and usually has ended up having his fingers burnt, not the most reliable on delivery I would ask both of them to show company info or further info on the contract before jumping ships.
Also if you had no -400 time are they going to pay for a bridging course as the 744 is not a 742 correct me someone if am wrong.
hope the above helps and good luck.
WA