Can we change the position of the infinitive in order to emphasize it?

Hello everyone.

In order to emphasize the infinitive, can I change its position?

Example,

1-) Your brother has some opportunities to get a better education in the U.K, but to go to the U.S, he doesn't have any opportunities.

(or- He has some oppurtunities for a better education in the U.K but, for a better education in the U.S, he doesn't have any opportunities.)

2-) For us to enjoy the party very much, there should be at least 100 people there.

3-) Being handsome is important to convince a girl for the relationship, but, to make the relationship last for a long time, it is not really important.

I think that they are not bad. Even if I was taught that infinitives just give purposes, I see lots of examples including infinitives not giving purposes or not modifying nouns.

I don't also think that I can use the combination "for+gerund" instead of "to+infinitive" in those sentences. So what do you think? Thanks in advance.