For his very first time... No.
over 500ug is very intense and for a first timer who does not know what to expect is careless.
For us vets sure we cna handle 500ug alone, but for a newbie 200ug is a good dosage if his advertised dosage is correct.
Most of L users have no idea how much theya re taking. For me I have access to a GCMS.
Most of the 110ug blotters you think you have are really <70ug.
Id suggest 200. 500 is just not a good idea for a newbie.
Anyone who says go for it on a newbie is just being careless.
( From a Chemist point of view)