Hmm, well... let's look at the facts again.1. A 5 x (salary+bonus) mortgage. That's big, irrespective of salary.2. 100K at 28? VERY well done, but can you rely on what is, lets be honest, a huge income for your age continuing into the future?3. Is your bonus guaranteed? Will it be as much next year as it was this year?On the other hand:You can always sell if it doesn't work out.