Should I Update My Investment Thesis to Include a Second Country and Target Both Angel and Pre-Seed Stages?

I came up with some questions based on the week's deliverables: 1) my ideal deal flow includes companies from both the US and overseas. Should I update the thesis and a second country that I know well since this could be in line with my investment strategy? 2) Is it ok to target both angel and pre-seed at the same time or do we have to focus on a particular stage?