They will not get 1 and 2, just pick 1 as the AFL scrapped the priority pick system. They do have the 2 Scully pick which means they have 3 first round picks. 1 of the 3 will be used on Viney, would definitely be in their best interests to finish bottom, otherwise any team under them can bid on Viney rendering their first pick (2, 3, 4 etc.) the 'Viney pick'.
They do get pick 1 and 2 if they finish last.
Pick 1 for finishing bottom, and the first Scully compo pick comes directly after where the Demons finish. There is your pick 2.
If they finish bottom, no-one can outbid them for Jack Viney, which means they can use their 2nd round pick to get him.
The second Scully compo pick comes in between the picks of the 9th and 8th placed teams. 14-ish.
So if they finish last they will have picks 1, 2, 14 and Jack Viney (2nd rounder). Luckily for us they can't draft and develop talent very well.