Greetings

I need verification if I am correct on this:

Assumption 1: Let us say I open two mini lot trading positions and we also assume that the pip value is $1.00 per pip (EUR/USD for this example) so the value will be +/- 2.00 per pip. Now if I assume a +100 pip profit on the two lots this would be a $200 (USD) profit. If I now were to close one of the lots and let the other ride the trend, then each pip in the remaining lot open would be valued at $1.00 the rest of the way. Further I close the second at a 50 pip profit, and so my total gross profit is 100*2.00 on the first take profit and 50*1.00 on the second take profit, equaling $250 gross profit. Is this assumption correct?

Assumption 2: If I trade smaller lots (a micro account as opposed to a regular lot), will the broker transaction costs be reduced accordingly? In other words if the spread is normally 5 pips as a transactions cost for a regular lot, will the transactions costs be reduced accordingly to the smaller size trade? Example 5 pips would be 50 dollars in this example for a regular lot trade, and if I trade a micro lot which is 1/10th of 1/10th the size of regular lot would the transaction cost be 1/10th *1/10th * 50 = .50

Appreciate your help in this inquiry!