Hi newbie, I've come across this a couple of times that buyers even put in a tentative offer before they had seen the house with a view to confirm it at the first viewing. I went and saw a house and put down the 381K straight away and I was in the lead for a good while but eventually someone came in with a higher offer and I lost out. The place I ended up buying I ended up in the 6% bracket, but as you've said a lot of people don't want to go there, so the first one that gets their offer in at the cut-off has some advantage at least. Ring up mon morning and see what they say. Quite often they receive offers on the same day of the first viewing, so if they have already some in on mon morning, you could ask how many parties have put in offers, and based on all that you could decide to go in full whack... In the end it's your decision, but I've done it myself and it almost worked...