Country Logic Puzzle - Pairs

DEFINITIONS
1) Country names and definition of continents as from Countries of the World Quiz.
2) Capitals as from World Capitals Quiz.
3) Country or capital length is measured counting only letters (excluding spaces and other punctuation marks).
4) "Connected" or "adjacent" in the grid means horizontally, vertically or diagonally.

RULES - First, identify the countries following the rules in Part 1. After you solved the first part, arrange the countries in the grid following the rules in Part 2.

PART 1 - Identifying the set of countries
1) All the countries in this quiz have the same initial letter of their capitals.
2) All countries begin with different initial letters.
3) There are two countries from each continent, with the exception of one continent which is NOT represented and one continent which is represented twice (4 countries).
4) If I declared which continent is represented twice and how many pairs of bordering countries there are, there would be only one set of countries satisfying the rules. (Note that you can deduce by yourself these pieces of information, in order to guarantee the uniqueness of the solution).

PART 2 - Arranging the countries in the grid
1) Any set of cells containing all the countries from the same continent is connected in the grid. In other words: if two countries are from the same continent, than you can move from one to the other in the grid through adjacent cells containing countries from the same continent (remember that adjacent means horizontally, vertically or diagonally).
2) In each row from left to right and in each column from top to bottom, the lenght of country names is non-decreasing.
3) There is a row in which the sum of capital lenghts is less than or equal to 30.

NOTE: for a much easier version, the continent represented twice is Africa and the number of pairs of bordering countries is 1. You may want to ignore this pieces of information, which are not required.